[SCSI] lpfc 8.2.2 : Fix locking around HBA's port_list

Cleans up a lot of bad behaviors that have been in this area a while

Signed-off-by: James Smart <James.Smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 7 insertions, 5 deletions

diff --git a/drivers/scsi/lpfc/lpfc_ct.c b/drivers/scsi/lpfc/lpfc_ct.c
index edbebffa26cf..43e2e33f9a07 100644
--- a/drivers/scsi/lpfc/lpfc_ct.c
+++ b/drivers/scsi/lpfc/lpfc_ct.c
@@ -390,17 +390,19 @@ lpfc_ct_cmd(struct lpfc_vport *vport, struct lpfc_dmabuf *inmp,
         return 0;
 }
 
-static struct lpfc_vport *
+struct lpfc_vport *
 lpfc_find_vport_by_did(struct lpfc_hba *phba, uint32_t did) {
-
         struct lpfc_vport *vport_curr;
+        unsigned long flags;
 
+        spin_lock_irqsave(&phba->hbalock, flags);
         list_for_each_entry(vport_curr, &phba->port_list, listentry) {
-                if ((vport_curr->fc_myDID) &&
-                        (vport_curr->fc_myDID == did))
+                if ((vport_curr->fc_myDID) && (vport_curr->fc_myDID == did)) {
+                        spin_unlock_irqrestore(&phba->hbalock, flags);
                         return vport_curr;
+                }
         }
-
+        spin_unlock_irqrestore(&phba->hbalock, flags);
         return NULL;
 }